<template>
  <el-menu default-active="2" :collapse="collapsed" collapse-transition router unique-opened
    class="el-menu-vertical-demo" background-color="#334157" text-color="#fff" active-text-color="#ffd04b">
    <div class="logobox">
      <img class="logoimg" src="@/assets/img/logo.png" alt="">
    </div>
    <el-submenu v-for="menu in allmenu" :key="menu.menuId" :index="menu.menuName">
      <template slot="title">
        <i class="iconfont" :class="menu.menuLogo"></i>
        <span>{{menu.menuName}}</span>
      </template>
      <el-menu-item-group>
        <el-menu-item v-for="chmenu in menu.menus" :index="'/'+chmenu.menuUrl" :key="chmenu.menuId">
          <i class="iconfont" :class="chmenu.menuLogo"></i>
          <span>{{chmenu.menuName}}</span>
        </el-menu-item>
      </el-menu-item-group>
    </el-submenu>
  </el-menu>
</template>
<script>
import{getTree} from '@/api/menu';
  export default {
    name: 'left',
    data() {
      return {
        collapsed: false,
        allmenu: []
      }
    },
    // 创建完毕状态(里面是操作)
    mounted() {
      // 获取图形验证码->[从后端获得该用户对应的角色进而得到用户能操作的menu]
      let roleId= JSON.parse(localStorage.getItem("user")).roleId
      getTree({"roleId":roleId}).then(res=>{
        this.allmenu = res.data
      })
      // 监听
      this.$root.Bus.$on('toggle', value => {
        this.collapsed = !value
      })
    }
  }

</script>
<style>
  .el-menu-vertical-demo:not(.el-menu--collapse) {
    width: 240px;
    min-height: 400px;
  }

  .el-menu-vertical-demo:not(.el-menu--collapse) {
    border: none;
    text-align: left;
  }

  .el-menu-item-group__title {
    padding: 0px;
  }

  .el-menu-bg {
    background-color: #1f2d3d !important;
  }

  .el-menu {
    border: none;
  }

  .logobox {
    height: 40px;
    line-height: 40px;
    color: #9d9d9d;
    font-size: 20px;
    text-align: center;
    padding: 20px 0px;
  }

  .logoimg {
    height: 40px;
  }

</style>
